function Platform()
{
    this.x = 310;
    this.y = 550;
    this.width = 80;
    this.height = 50;
    this.g_platform = new Image();
    this.g_platform.src = "./images/arkanoid.png";
}

Platform.prototype.draw = function(g_context)
{
    g_context.drawImage(this.g_platform, this.x, this.y, this.width, this.height );
}